Inverclyde · Scotland
External & façade joints in Greenock, Inverclyde
Professional external mastic in and around Greenock, with old sealant always removed completely and a one-year guarantee.
- Water getting into walls through failed joints
- Failed sealant between panels on a façade
- Sealant pulling away from one side of the joint
Why it’s worth doing now in Greenock
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last so it’s worth doing right. For landlords in Greenock, damp and leaks can fall under the Repairing Standard. Replacing failed sealant early is simpler than dealing with a complaint.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why Greenock customers choose us
- Tidy, careful work
- 180+ five-star Google reviews
- Over 20 years’ experience
- Trusted Arbo and Everbuild sealants
External mastic in Greenock
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall. Typical jobs include failed seals between different materials and leaking joints around cladding and façade panels, across concrete & block, façade panels and brickwork movement joints.
Harled walls are common in Scottish towns like Greenock, and the joints where harling meets windows, doors and pipes need a sealant that grips and flexes. Gutters and fascias here take plenty of Scottish weather too.
Each job carries a 12-month guarantee.
- Place
- Greenock (PA16, PA15, PA19)
- Wider area
- Inverclyde
- Cover
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common questions in Greenock
Does living near the coast affect external mastic in Greenock?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can you do external mastic in Greenock?
Yes. Our work covers the whole of Scotland, and Greenock is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing, and we will give you a clear quote.
Can new sealant go over the old?
No, it won’t last. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides, primed where needed.
Do you guarantee your work?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
Do you remove the old sealant?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Is there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
When it isn’t the sealant
New sealant cannot fix everything, and we’ll tell you before we start. It won’t solve:
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Render that’s blown, hollow or coming away
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly before you book.
Where we work in Greenock
- Render & cladding joints
- Copings & trims
- Façade panels
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
How we quote for external mastic
There’s no set price list. The quote depends on:
- When we can work, for business premises
- The number and length of the joints
- Any mould that needs treating
- Whether the work is at height
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What to tell us for a quote
To help us quote quickly, let us know:
- Where the property is
- The problem you’ve noticed
- The rough size of the job
- Whether it’s a home or a business
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, email us at info@mrmastic.co.uk.
What we are called out for in Greenock
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
These are the problems we are asked about most:
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Brick movement joints where the sealant has split
Ardgowan House, about 4.1 miles south-west, is one of the historic houses in the wider area around Greenock.
What to look for in a quote
- The length of the guarantee
- What happens if they find a problem under the old sealant
- How the joint is cleaned and prepared
- Whether they’re fully insured
Surface by surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one before sealing.
Landlords, agents and businesses in Greenock
Landlords and agents in Greenock can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
External mastic in Greenock: local notes
Greenock is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Rented homes near Drumfrochar station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Wellington Academy? Then larger buildings have long runs of movement joint that eventually need resealing.
Greenock is about 20 miles west of Glasgow, in Inverclyde. Wherever you are in the PA16 postcode area, we can carry out external mastic at your property. Greenock is one of 19 places in Inverclyde where we work. There’s also a page for Glasgow, roughly 20 miles from Greenock.
Postcode districts we cover here for external mastic: PA16, PA15 and PA19. Streets in the area include High Street, Main Street and Murdieston Street. Being close to the A8 and A78, Greenock is easy for our applicators to reach for external mastic. We also cover Greenock West (1 mile north), Cartsdyke (1 mile east), Branchton (1 mile west), Fort Matilda (1 mile north-west) and Braeside (2 miles west). Larger places within reach include Port Glasgow (4 miles east), Kilmacolm (7 miles south-east), Mid Auchinleck (4 miles east), Inverkip (4 miles south-west), Bogston (3 miles east) and Bardrainney (5 miles east).
What’s near Greenock
Locally, jobs take us to homes and businesses close to The James Watt pub and Watt Library. Greenock has its own railway station: Drumfrochar station. A little further out are McLean Museum and Art Gallery (0.6 miles north-east) and Oak Mall (0.7 miles north-east). For a walk, there’s Lyle Hill.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. Parking around Greenock is rarely difficult, though older streets in the centre can be tight. For flats, mention the shared stair or door entry system.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Tell us if parking is tricky
- Keep children and pets away from the work area
- Clear the area around the work
How to get a quote
For external mastic in Greenock, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before work begins.